BSC 108 ALABAMA Exam 1 2025
Domain Eukarya contains animals, plants, protists, and fungi. - Correct Ans-True
The process of keeping internal conditions constant is known as - Correct Ans-
Homeostasis
The levels of biological organization, in order from least complex to most complex, are:
biosphere, ecosystems, communities, populations, organisms, organ systems, organs,
tissues, cells, atoms, molecules. - Correct Ans-False
A new species has been discovered. Individuals of this species are multicellular
eukaryotes that obtain nutrients from decomposing organic matter. In which domain
should this species be classified? - Correct Ans-domain Eukarya
Communities are more complex than populations. - Correct Ans-true
What is the lowest level of structure that can perform all activities required for life? -
Correct Ans-cells
A tentative explanation of an observation is - Correct Ans-hypothesis
A collection of hypotheses that have been repeatedly tested without rejection is called a
- Correct Ans-theory
The three domains of life are: - Correct Ans-Eukarya, Archaea, Bacteria
What is the difference between hypothesis and theory? - Correct Ans-A theory is much
broader in scope than a hypothesis and is generally supported by an accumulation of
extensive and varied evidence.
Describe one theory that unifies biology as a science. - Correct Ans-The theory of
evolution by natural selection unifies biology as a science because it accounts for the
unity and diversity of life on Earth. This theory states that there is an overproduction of
offspring and competition for resources, and variation exists among individual offspring.
Unequal reproductive success (natural selection) among these offspring is the
mechanism of evolution.
What are the steps used in the scientific method? Use an example to illustrate the steps
of the scientific method. - Correct Ans-a)Observations, Question, Hypothesis,
Prediction, Test, Revise hypothesis or Make additional predictions and test them.
Example: I observe that my flashlight does not work. I question whether the batteries
are dead. I hypothesize that the dead batteries are causing my flashlight to not work
properly. I predict that changing the batteries will cause the flashlight to work again. I
BSC108